EP3317688A4 - Système et procédé pour une compensation de champ à courant de foucault dans une imagerie par résonance magnétique - Google Patents
Système et procédé pour une compensation de champ à courant de foucault dans une imagerie par résonance magnétique Download PDFInfo
- Publication number
- EP3317688A4 EP3317688A4 EP16838392.5A EP16838392A EP3317688A4 EP 3317688 A4 EP3317688 A4 EP 3317688A4 EP 16838392 A EP16838392 A EP 16838392A EP 3317688 A4 EP3317688 A4 EP 3317688A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- eddy
- magnetic resonance
- resonance imaging
- current field
- field compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002595 magnetic resonance imaging Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0017—Means for compensating offset magnetic fields or the magnetic flux to be measured; Means for generating calibration magnetic fields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0064—Arrangements or instruments for measuring magnetic variables comprising means for performing simulations, e.g. of the magnetic variable to be measured
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/007—Environmental aspects, e.g. temperature variations, radiation, stray fields
- G01R33/0082—Compensation, e.g. compensating for temperature changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/5608—Data processing and visualization specially adapted for MR, e.g. for feature analysis and pattern recognition on the basis of measured MR data, segmentation of measured MR data, edge contour detection on the basis of measured MR data, for enhancing measured MR data in terms of signal-to-noise ratio by means of noise filtering or apodization, for enhancing measured MR data in terms of resolution by means for deblurring, windowing, zero filling, or generation of gray-scaled images, colour-coded images or images displaying vectors instead of pixels
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510527333.4A CN106483482B (zh) | 2015-08-25 | 2015-08-25 | 用于磁共振成像系统的梯度涡流校正方法和装置 |
PCT/CN2016/085132 WO2017032132A1 (fr) | 2015-08-25 | 2016-06-07 | Système et procédé pour une compensation de champ à courant de foucault dans une imagerie par résonance magnétique |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3317688A1 EP3317688A1 (fr) | 2018-05-09 |
EP3317688A4 true EP3317688A4 (fr) | 2018-09-19 |
EP3317688B1 EP3317688B1 (fr) | 2020-09-23 |
Family
ID=58099594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16838392.5A Active EP3317688B1 (fr) | 2015-08-25 | 2016-06-07 | Système et procédé pour une compensation de champ à courant de foucault dans une imagerie par résonance magnétique |
Country Status (4)
Country | Link |
---|---|
US (2) | US10408908B2 (fr) |
EP (1) | EP3317688B1 (fr) |
CN (1) | CN106483482B (fr) |
WO (1) | WO2017032132A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109765512B (zh) * | 2019-01-18 | 2021-09-17 | 上海联影医疗科技股份有限公司 | 磁共振梯度系统及其涡流补偿方法及装置 |
CN112741612B (zh) * | 2019-10-31 | 2023-04-25 | 上海联影医疗科技股份有限公司 | 磁共振成像方法、装置、存储介质及计算机设备 |
CN111462975B (zh) * | 2020-03-31 | 2021-05-18 | 清华大学 | 一种磁场产生方法、同步加速器、存储介质和设备 |
WO2021243215A1 (fr) * | 2020-05-29 | 2021-12-02 | Hyperfine, Inc. | Systèmes et procédés d'imagerie d'écho de spin rapide à champ faible |
CN113219391B (zh) * | 2021-05-27 | 2021-12-14 | 成都鸣石峻致医疗科技有限公司 | 一种磁共振成像系统中加速涡流矫正的方法和设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6427079B1 (en) * | 1999-08-09 | 2002-07-30 | Cormedica Corporation | Position and orientation measuring with magnetic fields |
CN102298129A (zh) * | 2011-05-30 | 2011-12-28 | 苏州安科医疗系统有限公司 | 一种用于核磁共振成像系统的涡流测量及补偿方法 |
US20140125333A1 (en) * | 2011-06-30 | 2014-05-08 | Hitachi Medical Corporation | Magnetic resonance imaging apparatus and gradient magnetic field waverform estimation method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4965521A (en) | 1989-08-11 | 1990-10-23 | Spectroscopy Imaging Systems | Method and apparatus for compensating eddy current effects in a magnetic resonance device having pulsed magnetic field gradients |
EP0560396B1 (fr) * | 1992-03-13 | 2001-11-07 | Kabushiki Kaisha Toshiba | Imagerie par résonance magnétique nucléaire avec la qualité d'image et l'efficacité d'opération améliorées |
DE10306017A1 (de) * | 2003-02-13 | 2004-09-09 | Siemens Ag | Verfahren zum Ermitteln einer Kompensationseinstellung für ein Wirbelstromfeld |
DE102004060768B4 (de) * | 2004-12-15 | 2006-12-21 | Universitätsklinikum Freiburg | Wirbelstromkompensation mit N-Average SSFP Bildgebung |
CN102103196B (zh) * | 2009-12-18 | 2013-03-06 | 东软飞利浦医疗设备系统有限责任公司 | 具有可调数字预加重的磁共振梯度波形产生系统及方法 |
JP2012183233A (ja) | 2011-03-07 | 2012-09-27 | Toshiba Corp | 磁気共鳴イメージング装置 |
US8942945B2 (en) | 2011-04-19 | 2015-01-27 | General Electric Company | System and method for prospective correction of high order eddy-current-induced distortion in diffusion-weighted echo planar imaging |
US9191582B1 (en) * | 2011-04-29 | 2015-11-17 | Bae Systems Information And Electronic Systems Integration Inc. | Multi-mode high speed sensor |
CN103376433B (zh) | 2012-04-27 | 2017-02-15 | 西门子(深圳)磁共振有限公司 | 图像畸变校正方法及系统、磁共振成像设备 |
CN104181479B (zh) * | 2013-05-23 | 2015-07-01 | 上海联影医疗科技有限公司 | 用于磁共振成像系统的涡流补偿方法 |
-
2015
- 2015-08-25 CN CN201510527333.4A patent/CN106483482B/zh active Active
-
2016
- 2016-06-07 EP EP16838392.5A patent/EP3317688B1/fr active Active
- 2016-06-07 WO PCT/CN2016/085132 patent/WO2017032132A1/fr active Application Filing
- 2016-06-07 US US15/322,375 patent/US10408908B2/en active Active
-
2019
- 2019-09-09 US US16/564,702 patent/US10761172B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6427079B1 (en) * | 1999-08-09 | 2002-07-30 | Cormedica Corporation | Position and orientation measuring with magnetic fields |
CN102298129A (zh) * | 2011-05-30 | 2011-12-28 | 苏州安科医疗系统有限公司 | 一种用于核磁共振成像系统的涡流测量及补偿方法 |
US20140125333A1 (en) * | 2011-06-30 | 2014-05-08 | Hitachi Medical Corporation | Magnetic resonance imaging apparatus and gradient magnetic field waverform estimation method |
Non-Patent Citations (7)
Title |
---|
AULD B A ET AL: "REVIEW OF ADVANCES IN QUANTITATIVE EDDY CURRENT NONDESTRUCTIVE EVALUATION", JOURNAL OF NONDESTRUCTIVE EVALUATION, PLENUM PUBLISHING CORPORATIONT. NEW YORK, US, vol. 18, no. 1, 1 January 1999 (1999-01-01), pages 3 - 36, XP000973763, ISSN: 0195-9298, DOI: 10.1023/A:1021898520626 * |
BIN SUN ET AL: "A study based on real-time data acquisition system of intelligent seismometers in two dimension seismic prospecting", MECHATRONICS AND AUTOMATION (ICMA), 2012 INTERNATIONAL CONFERENCE ON, IEEE, 5 August 2012 (2012-08-05), pages 2400 - 2404, XP032224700, ISBN: 978-1-4673-1275-2, DOI: 10.1109/ICMA.2012.6285721 * |
JEHENSON P ET AL: "Analytical method for the compensation of eddy-current effects induced by pulsed magnetic field gradients in NMR systems", JOURNAL OF MAGNETIC RESONANCE, ACADEMIC PRESS, LONDON, GB, vol. 90, no. 2, 1 November 1990 (1990-11-01), pages 264 - 278, XP023961036, ISSN: 0022-2364, [retrieved on 19901101], DOI: 10.1016/0022-2364(90)90133-T * |
LEDGER P D ED - HUGHES THOMAS J R ET AL: "hp-Finite element discretisation of the electrical impedance tomography problem", COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, NORTH-HOLLAND, AMSTERDAM, NL, vol. 225, 23 February 2012 (2012-02-23), pages 154 - 176, XP028422208, ISSN: 0045-7825, [retrieved on 20120310], DOI: 10.1016/J.CMA.2012.02.015 * |
See also references of WO2017032132A1 * |
TAKAHASHI KAZUKI ET AL: "Nonlinear sensorless cooling control for a peltier actuated aluminum plate thermal system", PROCEEDINGS OF THE 2013 INTERNATIONAL CONFERENCE ON ADVANCED MECHATRONIC SYSTEMS, IEEE, 25 September 2013 (2013-09-25), pages 1 - 715, XP032531553, DOI: 10.1109/ICAMECHS.2013.6681839 * |
ZORGATI R ET AL: "EDDY CURRENT TESTING OF ANOMALIES IN CONDUCTIVE MATERIALS,. \PART I: QUALITATIVE IMAGING VIA DIFFRACTION TOMOGRAPHY TECHNIQUES", IEEE TRANSACTIONS ON MAGNETICS, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 27, no. 6, 1 November 1991 (1991-11-01), pages 4416 - 4437, XP000257358, ISSN: 0018-9464, DOI: 10.1109/20.278657 * |
Also Published As
Publication number | Publication date |
---|---|
CN106483482A (zh) | 2017-03-08 |
US10761172B2 (en) | 2020-09-01 |
US20170212200A1 (en) | 2017-07-27 |
EP3317688B1 (fr) | 2020-09-23 |
US10408908B2 (en) | 2019-09-10 |
CN106483482B (zh) | 2019-08-23 |
EP3317688A1 (fr) | 2018-05-09 |
US20200064429A1 (en) | 2020-02-27 |
WO2017032132A1 (fr) | 2017-03-02 |
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